Here is my last problem I am having problems with:(adsbygoogle = window.adsbygoogle || []).push({});

A solid ball of mass 1.70kg and diameter 16.0cm is rotating about its diameter at 65.0rev/min. What is its kinetic energy ?

Ok so KE for rotation is : 1/2*I *w^2

so I found I with m *r2

and then plugged everthing into the Ke equation but didnt get it right. I converted everything and divided the diameter by 2. What could I be doing wrong??

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# Homework Help: A solid ball problem

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